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SimpleX Chat is a cross-platform end-to-end (E2E) encrypted instant messaging app and console application. The app does not require phone number, email address, or any other external identification.[1]
| SimpleX Chat | |
|---|---|
| Developer | SimpleX Chat Ltd |
| Initial release | 12 January 2022 |
| Repository | github |
| Written in | Haskell, Kotlin |
| Operating system |
|
| Available in | English, German, Spanish, Chinese, Turkish, French, Italian, Russian, Ukrainian, Japanese, Polish, Hungarian, Czech, Dutch, Finnish, Bulgarian, Thai |
| Type | Encrypted voice calling, video calling and instant messaging |
| License | GNU Affero General Public License |
| Website | simplex |
SimpleX applications are completely open source and available for Android, iOS, Windows, macOS operating systems, and various Linux distributions.[2]
History
editThe messaging app was developed from 2020 to 2022, according to GitHub releases.[3] On January 12, 2022 there was an official release which introduced a terminal application featuring the implementation of the SMP protocol developed by SimpleX Chat Ltd.[4]
In July 2024, the American cybersecurity firm Trail of Bits conducted an independent security audit of the SMP protocol version 6.1.[5]
According to The Guardian, following the arrest of Pavel Durov in France in 2024 many far-right groups have migrated from Telegram to SimpleX due to hightened privacy concerns.[6]
Russia
editIn September 2024 the app was blocked by Russian authorities (Roskomnadzor).[7] In Septemper 2025, Tagansky court of Moscow fined the owning company SimpleX Chat Ltd. for "failure to fulfill the obligations of an instant messaging service provider", a violation of the law requiring every messaging application to collaboratee with state authorities and, if requested, provide encryption keys for certain communications.[8]
Features
editSimpleX Chat doesn't require any identification data to sign up and use the application. Unlike other instant messaging solutions, a SimpleX user isn't assigned a rigid unique identification number, which makes large-scale data scraping more difficult. All the private messages are E2E encrypted by SMP protocol, group messages work like multiple P2P messages and are also E2E encrypted , however that makes it harder to make larger chats.
References
edit- ^ "SimpleX Chat: private and secure messenger without any user IDs (not even random)". simplex.chat. Retrieved 2025-11-09.
- ^ "Download SimpleX apps". simplex.chat. Retrieved 2025-11-09.
- ^ simplex-chat. "Releases · simplex-chat/simplex-chat". GitHub. Retrieved 2025-11-09.
- ^ simplex-chat. "Release v1.0.0 · simplex-chat/simplex-chat". GitHub. Retrieved 2025-11-09.
- ^ "SimpleX network: cryptographic design review by Trail of Bits, v6.1 released with better calls and user experience". simplex.chat. Retrieved 2025-11-09.
- ^ Gilbert, David. "Neo-Nazis Are Fleeing Telegram for Encrypted App SimpleX Chat". Wired. ISSN 1059-1028. Retrieved 2025-11-09.
- ^ "Интернет-цензура и блокировка контента российскими регуляторами". ОВД-Инфо (in Russian). Retrieved 2025-11-09.
- ^ "Суд оштрафовал двоих владельцев анонимных мессенджеров за неисполнение закона РФ". РАПСИ (in Russian). 2025-09-24. Retrieved 2025-11-09.